Located in Muong Thanh ward in Dien Bien Phu city, Dien Bien province, Hill A1 possesses three defense lines. The first one stretched from the Cay Da blockhouse and protected the way to the hilltop has currently been the main road leading to the top of Hill A1. The second line was for counter-offensive assaults and the last one was a kind of underground bunker atop the hill.

Hill A1 played an important role in controlling the whole battle of Dien Bien Phu. Tourists in Vietnam tourism can easily realize a hole atop Hill A1 – which resulted from the pressure of an explosion in Dien Bien Phu Battle. This hole has become one of the most tourist-attractive destinations in Dien Bien province.

Apart from Hill A1, from afar tourists can easily recognize the names of some hills named Doc Lap, Him Lam, Hill C, D and E, which are now well-preserved by Dien Bien ‘s Authorities and its local people.

If you have a chance to visit Dien Bien in the near future, you once come to Muong Thanh ward where you can witness the remaining of historical relics in the battle of Dien Bien Phu.